Dernieres nouvelles du SCDB
- Message from the Executive Secretary of the Convention on Biological Diversity, Dr. Cristiana Pasca-Palmer, on the occasion of the World Environment Day, 5 June 2019: "Beat Air Pollution".
- Message from the Executive Secretary of the Convention on Biological Diversity, Dr. Cristiana Pasca Palmer, on the occasion of the World Oceans Day, 8 June 2019: "Gender and the Ocean".
- Young people from around the world are encouraged to submit videos for the 2019 Global Youth Video Competition showcasing positive solutions on three themes: Nature-based Solutions for Food and Human Health; Cities and Local Action to Combat Climate Change; and Nature-Based Solutions to balance the use of land for people and ecosystems.
Morphometric and genetic characterization of sympatric population of Clarias gariepinus and C. aguillaris from Senegal
|Download||Agnèse et al 1997 Clarias gariepinus et C anguillaris.pdf (French, 285 KB)|
|View||Open in browser|
|Upload date||05 Jan 2016|
|#||Language||File name||Contributor||Upload date||Size||Content type|
|1||French||Agnèse et al 1997 Clarias gariepinus et C anguillaris.pdf (current)||Célestin Mizani||05 Jan 2016||285 KB||application/pdf|
A sample of African Clarias catfishes from the Senegal River was studied using morphometry, allozyme variation, microsatellites and RFLPs of mitochondrial DNA. They all confirmed the
presence of two species, C. gariepinus and C. anguillaris. The two species were closely related genetically and no diagnostic loci were found in allozymes and microsatellites studies. Two of
the 11 haplotypes of mtDNA observed were shared by both species. Three of the four assays (morphometry, allozymes and microsatellites) allowed a precise characterization of both. One
specimen occupied an intermediate position in the analysis of the data; it was considered an F1 hybrid whose possible origin is discussed.